Upright vacuum cleaner



FIG. 1 is a front and right side perspective view of an upright vacuum cleaner showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

A bottom of the vacuum cleaner is unornamented and forms no part of the claimed design. 

The ornamental design for an upright vacuum cleaner, as shown and described. 